So this project simply alerts the owner to the presence of water. When I lived with family, our hot water tank exploded in the basement when everyone was gone for the day. Upon our return in the evening we found that the hot water did not work. Upon further investigation, we found that all of our stuff in the basement had been wrecked by all the water that had sat down there for hours. If a system like this was present then we could have reacted much quicker. This is also valuable to those who have sump pumps in their basements to alarm if there is a malfunction on a rainy day.
Below is a video of the system sending me an email when the threshold is broken: